Hose and the process of making the same.



H. .2. COBB.

HOSE AND THE PROCESS OF MAKING THE SAME. APPLICATION FILED FEB. 4. 1915.

1,230,867. Patented June 26,1917.

2 SHEETS-SHEET I.

4 AZZarwey H. Z. COBB.

HOSE AND THE PROCESS OF MAKING THE SAME.

APPLICATION FILED FEB. 4. I915.

Patented June 26, 1917.

2 SHEETS*SHEET 2.

nEnRY acorn, or wmcEEs'rER, massacnusnrrs, AssIGiioR'ro REVERE RUBBER.

comrnn'r,

1,230,867. a u a i Q I l pl cation filed February To all whom it may concern: I Y

Be it known that I, HENRY Z. Gone, a citizen of the United States, residlng at Wmchester, county of Middlesex,"State of Masess of Making the Same,

saehusetts, have invented certain new and useful Improvements in Hose and the Procof which the following is a full, clear, and exact description. My invention relates to hose'composed of rubber and fabric, particularly to what is known in the art as wrapped hose, in

I which a tubular inner portion of rubber is bon of the fabric out l wrapping of or pole and then to cover the same with the spiral wrapping of fabric which has been usually cut on the bias to give the neoessaryflexibility and durability to the hose.

*complished by hand,

This wrapping-operation was necessarily acthe fabric being placed a on a table of the desired length of the hose,

i duces the same advantages'as cutting-the of five hundred feet, or evenmore, be wrapped very rapidly pass helically about the hose as concerns say fifty feet, andthe mandrel with the rubber tube thereon rolled over the fabric so that the same was wrapped about the entire length of the mandrel a requisite number of times to give the necessary plies. In accordance with the present invention, the hose may be made in continuous lengths and may 111 a machine provided for that purpose.- Such amachine is described and claimed in my'co-pending application Serial No. 6,022,-filed. February 4,

7, 1916 and includes 'the fact that the strips of frictioned fabric are wrapped helically about the hose, the threads of the fabric are thereby causes tfi the warp and the weft threads. This profabricfon the bias and then wrapping the,

hose'with one continuous longitudinal strip. I have also found that ny improved hose is capable of withstanding an internal pres- I 1 Specification oiletters Patent.

one continuous cut away;

for well lmown way, 1915, whichhas maturedinto Patent No.

1 covering 2 is A CORPORATION OF RHODE ISLAND.

nosE rRocEssoE mAKnIernE saJuE'.

mated June 25, 1911. 4,191.5. Serial N0. 6,021. i

sure nearly twice that of hose wrapped in the ordinary manner, without bursting. My improved hose is also much cheaper to manufacture owing to the fact that the fabric 60. can be wrapped much more rapidlythan by the old process where the hose is wrapped by hand. I believe that I am the first to produce a wrapped hose in which the manufacture may be carried on for continuous lengths over fifty feet, and in the present instance the quantity that can be manufactured in length is limited only by the 1flacilities for handling and 'vulcaniz'ing the ose. v

Fora detailed description of two formsof my invention and the process, of making the same, reference may be had to the following specification and to the accompanying drawings forming a part thereof, in which:

Figure l'is an illustration of a piece of hose made in accordance with this invention, and having partsthereof cut away so as to indicate the interior construction;

Fig; '2 ,is a similar view of a piece of the '80 hose showing the rubber removed therefrom, and the. fabric in section;

Fig. 3 indicates a short section of the wrapping strip;

Fig. 4 indicates a piece of hose in which 85 the wrapping isplaced thereon in two helical layers, and also showins oortions thereof Fig. 5 illustrates a short section of the hose shown in Fig. 4:, the outer'wrappings being shown in section; and

Fig; 6 indicates a piece of the wrapping similar to that of Fig. 3.

\ Referring to the drawings, the numeral 1 indicatesa tube of vulcanizable rubber composition which may be made in any suitable such as by the pressure, or drawingfmet'hod in which the rubber is forced through the annular space between two dies. After the tube has been formed, the same is then preferably run through a suitable braiding machine in which a braided covering of helicailly inclined strands are placed on the outer-surface of the tube. These strands are preferably coated with rubbercomposition at the braiding point, or while the coverin is being formed. This 'pre erably braided while the interior tube 1 is under a certain degree of atmospheric or other fluid pressure to prevent the same. from collapsing.

The tubing with the covering 2 is then run through a machine similarto that described in my above mentioned application, in which the frictioned fabric 3 is wound spirally about the same for the entire length of the tube without the necessity of stopping at the end of any particular length. Thereafter 'a-layer of vulcanizable rubber composition is applied to the outer fabric 3 in any suitable manner; The hose is then vulcanized-for its entire length in any well known and preferred form of mold, or otherwise.

liiIFig. 2 it will be noted that the successive convolutions of the fabricoverlap each other for about one-half .of the width of the same, thus making a two-ply thickness of the fabric on the surface. of the rubber tube. It is obvious that the braided covering Qniay be omitted, if desired, but]? prefer to use the same as it aids in maintaining the size and shape of the hose during the operation of placing the fabric thereon. It

also adds to the durability and strength of d the hose.

In Figs.4 and 5 I have illustrated a form of hose which is' similar to that illustrated in Figs. 1 and 2, but has in addition a second substantiall layer of helically wound fabric superposed on the first, as indicated at 5. This second layer may be placed in position simultaneously with the first by duplicating the winding mechanism described in my pre application relating to such a machine. If preferred, however, each viously mentioned layer may be applied separately in two machines or by running the hose.- through the same-machine twice. The strip of fabric 5, as indicatedin Fig. 5, may also overlap each successive convolution for substantially onehalf of its width, thereby making two additional plies, which in addition .to the first plies produces a hose of practically four-ply thickness, of fabric. Any number ofsuccessive windings may thus be laid on, makingahose of the number of plies desired. As above described, the last winding may be covered with a layer of rubber composition ,4: to give asmooth appearance and protect the fabric of th6"O1lt eI W1I1d1I1g. If it is desired to make 'a three-ply 'hose with one winding of the fabric, the successive'convolutions of the fabriomay be caused to overlap each other for substantially twothirds of their width, and in a four-ply hose made With-a single winding, the successive convolutio s may overlap each other for three-quarters of their width,

, and so on.

Having thus described these forms of my invention, I do notwish to be understood asbeing limited to the details of form and ar rangements of parts herein set forth, for

- various changes may be made without deping the same with siveconvolutions of frictioned fabric under tension, said convolutions overlapping each other successively for half their width,-

whereby a smooth layer of substantially continuous two-ply fabric is formed.

2. An article of manufacture ing an inner tube of vulcanized rubber compound, a covering of braided strands impregnated with rubber composition, and successive convolutions of frictioned fabric uner tension, said convolutions overlapping each other for half their width, whereby a smooth layerof substantially continuous two-ply fabric is formed.

3. The process of making, a continuous length of a tubular article which comprises forming an inner layer of suitable material, inflatingthe same and continuously wrapa series of helical convolutions of frictioned fabric under tension.

l. .The process lengths of conductive hose which comprises forming an inner tube of rubber composition, inflating the same, and continuously wrapping the same with a series of helical convolutions of frictioned fabricundertension.

The process of making continuous lengths of conductive hose which comprises forming an inner tube of rubber composition, inflating the same,

braided strands thereon, and then continucomprising a continuous length of conductive hose, havof making continuous.

forming a covering of ously'wrapping the same with a series of helical convolutions offrictioned fabric un der tension. 7 7

' 6. The process of making continuous lengths of conductive hose which. comprises forming an innertube of rubber composition, inflating the same, forming a covering of braided strands thereon, and then continuously and simultaneously wrapping a plurality of superposed layers of successive helical convolutions of frictioned fabric thereon under tension, some of said helical convolutions comprising helices of opposite itch. Y

Signed this 19th day of Jan. 1915.=

- HENRY Z. COBB. Witnesses: 1

E. L. STICKNEY,

E. E. JoNns. 

